Search Results - "Lissi, E"

Review of methods to determine chain-breaking antioxidant activity in food by Roginsky, Vitaly, Lissi, Eduardo A.

“…The beneficial influence of many foodstuffs and beverages including fruits, vegetables, tea, red wine, coffee, and cacao on human health has been recently…”
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Oxidation capacity of the city air of Santiago, Chile by Elshorbany, Y. F., Kurtenbach, R., Wiesen, P., Lissi, E., Rubio, M., Villena, G., Gramsch, E., Rickard, A. R., Pilling, M. J., Kleffmann, J.

“…The oxidation capacity of the highly polluted urban area of Santiago, Chile has been evaluated during a summer measurement campaign carried out from 8–20 March…”
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Seasonal dependence of the oxidation capacity of the city of Santiago de Chile by Elshorbany, Y.F., Kleffmann, J., Kurtenbach, R., Lissi, E., Rubio, M., Villena, G., Gramsch, E., Rickard, A.R., Pilling, M.J., Wiesen, P.

“…The oxidation capacity of the highly polluted urban area of Santiago de Chile has been evaluated during a winter measurement campaign from May 25 to June 07,…”
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Comparison of different techniques for the preservation and extraction of phlorotannins in the kelp Lessonia spicata (Phaeophyceae): assays of DPPH, ORAC-PGR, and ORAC-FL as testing methods by Cruces, E, Rojas-Lillo, Y, Ramirez-Kushel, E, Atala, E, López-Alarcón, C, Lissi, E, Gómez, I

“…Preservation, storage, and safe transport of samples are key factors affecting brown algal phlorotannin (phenolics) quantification, their extraction yield, and…”
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Ascorbic acid contribution to ORAC values in berry extracts: An evaluation by the ORAC-pyrogallol red methodology by Atala, E., Vásquez, L., Speisky, H., Lissi, E., López-Alarcón, C.

“…An oxygen radical absorbance capacity (ORAC) method based on pyrogallol red bleaching (ORAC-PGR) was used to evaluate the scavenging activity of berry extracts…”
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A novel and simple ORAC methodology based on the interaction of Pyrogallol Red with peroxyl radicals by López-Alarcón, C, Lissi, E

“…Oxygen radicals absorbance capacities (ORAC) indexes are frequently employed to characterize the radical trapping capacity of pure compounds and their complex…”
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Bovine serum albumin as chain transfer agent in the acrylamide polymerization. Protein-polymer conjugates by Valdebenito, A., Espinoza, P., Lissi, E.A., Encinas, M.V.

“…Acrylamide photopolymerization at 25°C, using as chain transfer agent the single exposed cysteine residue of bovine serum albumin (BSA), resulted in a…”
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The pore forming capacity of Sticholysin I in dipalmitoyl phosphatidyl vesicles is tuned by osmotic stress by Ahumada, M., Calderon, C., Lissi, E., Alvarez, C., Lanio, M.E., Pazos, F.

“…•Hypotonic gradients improve the pore forming capacity of rSt I molecules, even in pure DPPC large unilamellar liposomes.•In hypotonic conditions, the…”
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Controversial alkoxyl and peroxyl radical scavenging activity of the tryptophan metabolite 3-hydroxy-anthranilic acid by Dorta, E, Aspée, A, Pino, E, González, L, Lissi, E, López-Alarcón, C

“…Abstract 3-Hydroxy-anthranilic acid (3-OHAA), a tryptophan metabolite produced in the kynurenine pathway, is an efficient antioxidant towards peroxyl radicals…”
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Antioxidant capacity of herbal infusions and tea extracts: A comparison of ORAC-fluorescein and ORAC-pyrogallol red methodologies by Alarcón, E., Campos, A.M., Edwards, A.M., Lissi, E., López-Alarcón, C.

“…Oxygen radical absorbance capacity (ORAC) values have been obtained for a series of teas and herbal infusions employing 2,2′-azo-bis(2-amidinopropane) as free…”
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Relationship between lipid peroxidation and rigidity in L- α-phosphatidylcholine-DPPC vesicles by Soto-Arriaza, M.A., Sotomayor, C.P., Lissi, E.A.

“…DPPC incorporation into egg-PC unilamellar vesicles reduces their oxidation rate beyond that expected from the unsaturated lipid dilution. Addition of the…”
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Photobehavior of merocyanine 540 bound to human serum albumin by Alarcón, E, Aspée, A, González-Béjar, M, Edwards, A M, Lissi, E, Scaiano, J C

“…The photobehavior of merocyanine 540 (MC) was studied in homogeneous media (ethanol, buffer and glycerol), and in microheterogenous systems (Triton X-100…”
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Response of unilamellar DPPC and DPPC:SM vesicles to hypo and hyper osmotic shocks: A comparison by Ahumada, M., Calderon, C., Alvarez, C., Lanio, M.E., Lissi, E.A

“…•Osmotic shocks applied to vesicle suspensions, promote changes in turbidity and an increase in fluorescence intensity of entrapped dyes.•Calcein leakage is…”
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Evaluation of solute binding to proteins and intra-protein distances from steady state fluorescence measurements by Alarcón, E., Aspée, A., Abuin, E.B., Lissi, E.A.

“…Steady state fluorescence measurements, due to their relative simplicity and fast and easy implementation, are one of the most employed techniques for…”
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Antioxidant capacity of phenolic compounds in acidic medium: A pyrogallol red-based ORAC (oxygen radical absorbance capacity) assay by Atala, E., Aspée, A., Speisky, H., Lissi, E., López-Alarcón, C.

“…•Novel PGR-based ORAC assay in acidic media to assess antioxidant capacity presented.•The index is associated with the reactivity of phenols toward peroxyl…”
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Kinetics of phycocyanine bilin groups destruction by peroxyl radicals by Lissi, E.A., Pizarro, M., Aspee, A., Romay, C.

“…Bilin groups in c-phycocyanine are readily bleached by peroxyl radicals produced in the thermolysis of 2,2′-azobis(2-amidinopropane). From an evaluation of the…”
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Summertime photochemical ozone formation in Santiago, Chile by Elshorbany, Y.F., Kleffmann, J., Kurtenbach, R., Rubio, M., Lissi, E., Villena, G., Gramsch, E., Rickard, A.R., Pilling, M.J., Wiesen, P.

“…The city of Santiago, Chile experiences frequent high pollution episodes and as a consequence very high ozone concentrations, which are associated with health…”
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Effect of the addition of alkanols of different topology to dipalmitoyl-phosphatidylcholine vesicles in the presence of gramicidin by Soto-Arriaza, M.A., Olivares-Ortega, C., Lissi, E.A.

“…[Display omitted] ► We evaluate the effect of nonanol family upon DPPC LUVs in the absence and in presence of gramicidin. ► Incorporation of alkanols decreases…”
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Mechanism of Pyrogallol Red Oxidation Induced by Free Radicals and Reactive Oxidant Species. A Kinetic and Spectroelectrochemistry Study by Atala, E, Velásquez, G, Vergara, C, Mardones, C, Reyes, J, Tapia, R. A, Quina, F, Mendes, M. A, Speisky, H, Lissi, E, Ureta-Zañartu, M. S, Aspée, A, López-Alarcón, C

“…Pyrogallol red (PGR) presents high reactivity toward reactive (radical and nonradical) species (RS). This property of PGR, together with its characteristic…”
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Thiols as chain transfer agents in free radical polymerization in aqueous solution by Henrı́quez, C., Bueno, C., Lissi, E.A., Encinas, M.V.

“…The behavior of thiophenol and aliphatic thiols of different structure as chain transfer agents in the polymerization of acrylamide and 1-vinyl-2-pyrrolidone…”
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